Transcription of PATH ANALYSIS I: INTRODUCTION - PiratePanel
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PATH ANALYSIS I: INTRODUCTION - PiratePanel
An INTRODUCTION to Path ANALYSIS Developed by Sewall Wright, path ANALYSIS is a method employed to determine whether or not a multivariate set of nonexperimental data fits well with a particular (a priori) causal model. Elazar J. Pedhazur (Multiple Regression in Behavioral Research, 2nd edition, Holt, Rinehard and Winston, 1982) has a nice introductory chapter on path ANALYSIS which is recommended reading for anyone who intends to use path ANALYSIS . This lecture draws heavily upon the material in Pedhazur's book. Consider the path diagram presented in Figure 1.
Page 5 Figure 2 r 12 = 0 p 31 p 31 = r 31 p 32 = r 32 p 32 Note that the program contains the correlation matrix from Pedhazur. I decided to use an N of 50, but did not enter means and standard deviations for the variables, so the parameter estimates that SAS produces are standardized (the slope is a beta).
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